7 1000 | ( | 1 1000 | x | × | 2 | − | 11 10 | x | + | 705 2 | ) | = | ( | 7 1000 | x | + | 41 10 | ) | ÷ | ( | 11 10 | − | 1 500 | x | ) |
| 方程两边同时乘以: | ( | 11 10 | − | 1 500 | x | ) |
7 1000 | ( | 1 1000 | x | × | 2 | − | 11 10 | x | + | 705 2 | ) | ( | 11 10 | − | 1 500 | x | ) | = | ( | 7 1000 | x | + | 41 10 | ) |
7 1000 | × | 1 1000 | x | × | 2 | ( | 11 10 | − | 1 500 | x | ) | − | 7 1000 | × | 11 10 | x | ( | 11 10 | − | 1 500 | x | ) | + | 7 1000 | × | 705 2 | ( | 11 10 | − | 1 500 | x | ) | = | ( | 7 1000 | x | + | 41 10 | ) |
7 1000 | × | 1 1000 | x | × | 2 | ( | 11 10 | − | 1 500 | x | ) | − | 7 1000 | × | 11 10 | x | ( | 11 10 | − | 1 500 | x | ) | + | 7 1000 | × | 705 2 | ( | 11 10 | − | 1 500 | x | ) | = | 7 1000 | x | + | 41 10 |
7 500000 | x | ( | 11 10 | − | 1 500 | x | ) | − | 77 10000 | x | ( | 11 10 | − | 1 500 | x | ) | + | 987 400 | ( | 11 10 | − | 1 500 | x | ) | = | 7 1000 | x | + | 41 10 |
7 500000 | x | × | 11 10 | − | 7 500000 | x | × | 1 500 | x | − | 77 10000 | x | ( | 11 10 | − | 1 500 | x | ) | + | 987 400 | ( | 11 10 | − | 1 500 | x | ) | = | 7 1000 | x | + | 41 10 |
77 5000000 | x | − | 7 250000000 | x | x | − | 77 10000 | x | ( | 11 10 | − | 1 500 | x | ) | + | 987 400 | ( | 11 10 | − | 1 500 | x | ) | = | 7 1000 | x | + | 41 10 |
77 5000000 | x | − | 7 250000000 | x | x | − | 77 10000 | x | × | 11 10 | + | 77 10000 | x | × | 1 500 | x | = | 7 1000 | x | + | 41 10 |
77 5000000 | x | − | 7 250000000 | x | x | − | 847 100000 | x | + | 77 5000000 | x | x | + | 987 400 | ( | 11 10 | − | 1 500 | x | ) | = | 7 1000 | x | + | 41 10 |